Multicore Computing Security - Automobiles have become an indispensable part of life for both business and pleasure in today s society. Because of the long-term continuous work, fatigue presents a great danger to ride-sharing and truck drivers. Therefore, this paper aims to design a device that provides valuable feedback by evaluating driver status and surroundings. A gradient judgment is made through lane detection and face detection. When a dangerous condition is detected, the driver will be alerted by music and audio announcements with different degrees. The system also has two additional functions. First, a digital record-keeping to assist the professional driver. The other is a security system that if a stranger starts the car, a text message will be sent to the owner s phone. Compared with those in previous works, the proposed system s efficacy and efficiency are validated qualitatively and quantitatively in driver fatigue detection.